Fix the Views GTK build.

views/animator.cc

Index: views/animator.cc
diff --git a/views/animator.cc b/views/animator.cc
index 2b2a7db7bfe11250569fefe01c2fb60f698aa9e4..177b0e150e9c50eaf91d7ef51d6022e72ecf41b6 100644
--- a/views/animator.cc
+++ b/views/animator.cc
@@ -84,6 +84,12 @@ void Animator::AnimateToBounds(const gfx::Rect& bounds, int direction) {
   animation_->Show();
 }
 
+void Animator::AnimateToBounds(int x, int y, int width, int height,
+                               int direction) {
+  AnimateToBounds(gfx::Rect(x, y, std::max(0, width), std::max(0, height)),
+                  direction);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Animator, AnimationDelegate: